[RE-wrenches] Pump choice - Grundfos or Lorentz; distributers of Lorentz

[Jeff Lahl]

Bob,

Innovative Solar is one company that can help you with the Lorentz pumps.
866-856-9819

 

We're currently ordering 3 pump systems for West Africa and ended up using
both Grundfos SQF and Lorentz.  We've had good luck with Grundfos in the
past but our needs in some cases exceeded what the SQF could pump so will be
trying Lorentz for the first time.  I was hesitant after hearing some
unfavorable things about Lorentz but have been told that the latest versions
have the problems worked out.  I'm afraid I don't recall what the original
problems were supposed to be but I'm sure others on the list will contribute
their experiences.  It will be interesting to see how both systems hold up
in the same environment.

 

Another company to check out for a full range in pumps is Sunpumps.
www.sunpumps.com  800 370-8115.

 

Good luck,

 

Jeff

 

 

Jeff Lahl  |  Project Director

Solar Electric Light Fund  |   <http://www.self.org/> www.self.org

p 808-874-5706

f  808-874-5706      

________________________________

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From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Bob Clark
Sent: Sunday, March 07, 2010 7:22 AM
To: re-wrenches at lists.re-wrenches.org
Subject: [RE-wrenches] Pump choice - Grundfos or Lorentz; distributers of
Lorentz

 

Wrenches:

 

I know from searching the archives that the virtues of Grundfos vs. Lorentz
pumps have been discussed briefly, but seemingly not lately.  If I am
repeating something, please direct me to previous discussion threads.

 

Stock watering situation: Total Dynamic Head = 212 feet; 48.5 degrees north
latitude; need 1250 gallons per day in July and August; can pump a maximum
of 3 gallons per minute from a developed spring without drawing down the
water level; 2300 gallons total water storage capacity (1700 gallon tank and
600 gallon trough).  Going to try to not use batteries.  I think it can just
barely be done with the allowable flow.

 

I am looking at possibly using the Lorentz Solar Pump PS600.  It appears to
be quite versatile which is important for fine-tuning this particular stock
watering system.

 

Any comments or suggestions about this pump (suitability, reliability, cost)
vs. the Grundfos 6 SQF-2?

 

Distributers for the Lorentz pump?

 

Bob Clark

SolarWind Energy Systems, LLC

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